You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you​ survey? Assume that you want to be 90​% confident that the sample percentage is within 4.5 percentage points of the true population percentage. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n=____   b. Assume that a prior survey suggests that about 36?% of air passengers prefer an aisle seat. n=____

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A: a. we should use z test for one sample proportion.

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Q: 3. What is the median of the data set (30, 10, 20, 40}? OA. 10 OB. 15 OC. 20 OD. 25

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Q: Calculate the following. (Round your answer to two decimal places.) sample mean = x

A:

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Q: Decide if the following statement are true or false.  If the statement is false, please correct it.…

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Q: 2. Find the mean of this data set: 8, 8, 3, 4, 8, 6, 4, 3. OA. 5 OB. 5.5 O c. 6 OD. 8

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Q: Multiple choice Questions (Choose the correct answer or answers). 1. Which of the following is the…

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A:

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A:

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A: The solution is given below.

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Q: In a sample of 500 parts produced by a grinding machine, 396 parts were defective. A test is…

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Q: 3. Find the median of this data set: 6, 4, 2, 3, 1, 5, 8, 8, 9, 6. OA. 5.2 OB. 5 O c. 5.5 OD 6

A:

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Q: Please answer questions below Below is a sample of 64 responses of a survey of Ward 3 residents in…

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A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.